Article of manufacture



1931. s. N. WILLIAMS ARTICLE OF MANUFACTURE Filed Aug. 11, 1930 s/ EZM 4/Zz ATEYS Patented Nov. 3, 1931 UNITED STATES PATENT OFFICE GEORGE N.WILLIAMS, OF KOKOMO, INDIANA, ASSIGNOR TO CONTINENTAL STEEL COR-PORATION, OF KOKOMO, INDIANA A CORPORATION OF INDIANA ARTICLE OFMANUFACTURE Application filed August 11, 1930. Serial No. 474,618.

This invention has reference to an iron or steel article which has aprotective coating preferably of. zinc spelter and such coatingcement-coated.

The invention. furthermore, relates to an article ofv manufacture as,for example, a nail or the like. provided with an exterior coating of amaterial. preferably non-metallic, which has a low melting point, as,for example,

cement-coating, a substance or compositlon which is sensitive to heatand which will become softened by the heat of friction occasioned bydriving the nail, only to become set again when the nail hasbeen drivenhome, when the cement-coating adheres not only to the nail but also tothe surrounding fiber of the material into which the nail has beendriven. and holds the nail practically cemented in place: and having ametallic protective coating between the body of thenail and saidexterior coating.

coating functioning to set the article.

Cement-coating as herein used is well known to those skilled in the artas relating to a substance or composition includingagumniy-like-constituent, such as gum orresin.

I am awarethat to coat nails and like articles with zinc spelter. perse, is not new and I am also aware that to coat-nails and like arti- Inthis instance, I combine the qualities of a protective coating on theiron or steel article with an exterior coating of a substance orcomposition which tends to set or cement the article in place; the zincspelter protecting the article against corrosion and the cementhavefound that merely cement-coating an article, as for example a nail, doesnot offer that degree of protection against corrosion as is offered byzinc spelter due .to the fact that when the nail is driven and thecementcoating is'softened, there is a tendency to expose surfaceportions of the. nail for the colnail and then surfacing such coatingwith a cement-coating, I obtain, first, an article which is fullyprotected against corrosion and coating has a better and more effectivead-v hesion of the zinc spelter than it does to the iron or steelarticle itself.

That the invention may be more fully understood, reference is had to theaccompanying drawing illustrating a preferred embodiment of theinvention, in which:

The figure shows an elevation of a nail partly broken away to disclosethe zinc spelter coating on the body of the nail and such coatingcovered with cement-coating.

In the drawing the nail is shown having th shank 1 and provided with theusual head 2 and the driving point 3. The surface of the complete nailis shown coated preferably with a zinc spelter coating 4 applied in anypreferred or usual manner and such zinc spelter coating covered orcoated with a cement-coating 5. i

As pointed out, the zinc spelter is a coating which will protect thebody of the nail or similar article against corrosion and rust attackand said zinc spelter covered or coated with a cement-coating which hasproperties sensitive to heat so that when applied to a nail and the naildriven. the cement-coating becomes softened by the heat of frictionoccasioned by driving the nail, only to become set again when the nailhas been driven home; furthermore, as pointed out, the cementcoating hasa better'adherence or bonding action when applied to the zinc speltercoating than when applied to the iron or steel body and if and in theevent. due to the action of heat resulting from frictionthe'cementcoating opens or spreads sufficient tov allow moisture toattack the article itself, such is prevented by the zinc speltercovering the article and interposed between the article and thecement-coating.

What I claim is:

As a new article of manufacture, a nail having a zinc spelter coatingextending throughout substantially its entire surface- Leaeem and acement coating including a gummy-like constituent completely envelopingthe first named coating and having an aflinity therefor, and furtherhaving a lower melting point so as to be softened by the heat resultantfrom friction upon driving the nail into position so as to effectadherence of the cement coating to the material into which the nail isdriven. In witness whereof, I have hereunto set my hand this 8th day ofAugust. 1930. GEORGE N. WILLIAMS.

